Massachusetts Sen. Elizabeth Warren seized on Donald Trump's criticism of Hillary Clinton during the final presidential debate while she was campaigning in New Hampshire Monday. "Nasty women are tough," Warren said. "Nasty women are smart, and nasty women vote."

A day after the final presidential debate in which Republican nominee Donald Trump refused to accept the results of the presidential election, he told supporters in Ohio he will accept the results "if I win."

Hillary Clinton and Donald Trump will face off in the final debate of the 2016 election cycle Wednesday in Las Vegas. Join the PBS NewsHour for live coverage and analysis from Mark Shields, David Brooks and Amy Walter starting at 9pm ET.